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In this study, the earthworm Eisenia fetida was exposed to soils contaminated with polylactic acid microplastics (PLA MPs, 0.5% w/w) and arsenite (As(Ⅲ), 40 or 100mg/kg) under single and co-exposure scenarios for 28 days. The responses of six selected biomarkers and the bioaccumulation levels of the two pollutants in earthworms were analyzed to evaluate the joint toxic effects and underlying mechanisms of PLA MPs and As(Ⅲ). Bioaccumulation results indicated that the bioaccumulation of As(Ⅲ) in co-exposure groups decreased by an average of 34.2% compared to the single As(Ⅲ) exposure groups. Biomarker analysis revealed significant oxidative stress responses in earthworms, which intensified with increasing exposure concentration and duration. The Integrated Biomarker Response index (IBR) was used to quantify the integrated toxic effects of multiple biomarkers, showing a significant dose-effect relationship in both single and co-exposure groups. Notably, the IBR values in co-exposure groups were reduced by an average of 28.8% compared to those in single As(Ⅲ) exposure groups. Joint toxicity evaluation indicated antagonistic interactions between PLA MPs and As(Ⅲ) at both arsenic exposure levels. These findings systematically elucidate the toxicological effects and potential mechanisms of PLA MPs and As co-contamination in earthworms, providing scientific evidence for ecological risk assessment of such combined toxicity.

, authors=Yi-meng YAN, Jun-hui LIU, Lin-yan MA, Xiao-xue FENG, Bai-cun LI, Xin-yan LI, Xiu-feng CAO, Li ZHU, Zhi-feng WANG*, authorsList=Yi-meng YAN, Jun-hui LIU, Lin-yan MA, Xiao-xue FENG, Bai-cun LI, Xin-yan LI, Xiu-feng CAO, Li ZHU, Zhi-feng WANG, authorCompany=null, correspAuthors=Zhi-feng WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314917957898166532, articleId=1314917956774093057, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=聚乳酸微塑料与砷复合污染对蚯蚓的毒性效应, columnId=1314917798195856342, journalTitle=中国环境科学, columnName=新污染物与毒理, runingTitle=null, highlight=null, articleAbstract=

将赤子爱胜蚓(Eisenia fetida)暴露于聚乳酸微塑料(PLA MPs, 0.5% w/w)与不同浓度亚砷酸盐(As(Ⅲ),40或100mg/kg)的单一及复合污染土壤中28d,分析蚯蚓体内6种生物标志物的响应特征和两种污染物的生物富集水平,以评估PLA MPs和As(Ⅲ)的联合毒性效应及相关机制.生物富集分析结果显示,复合暴露组的As(Ⅲ)生物富集量较单一As(Ⅲ)暴露组平均下降34.2%.生物标志物分析结果显示,随着暴露水平和时间的增加,蚯蚓体内出现显著的氧化应激响应.采用综合生物标志物响应指数(IBR)量化多种生化指标的综合毒性效应,在PLA MPs和As(Ⅲ)的单一及复合污染组中均显示出显著的剂量-效应关系,且发现复合暴露组的IBR指数值较单一As(Ⅲ)暴露组平均降低28.8%.联合毒性评价结果表明,两者在不同As浓度暴露下的联合毒性效应均为拮抗作用.本研究揭示了PLA MPs与As复合污染对蚯蚓的毒性效应及其潜在机制,为评估此类联合毒性的风险提供了科学依据.

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闫艺萌(2004-),女,山东临沂人,本科生,主要从事土壤环境毒理学研究..

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* 责任作者,副教授,
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聚乳酸微塑料与砷复合污染对蚯蚓的毒性效应
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闫艺萌 , 刘俊慧 , 马琳燕 , 冯晓雪 , 李柏村 , 李欣妍 , 曹秀凤 , 朱丽 , 王志峰 *
中国环境科学 | 新污染物与毒理 2025,45(8): 4646-4655
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中国环境科学 |新污染物与毒理 2025 , 45 (8) : 4646 -4655
聚乳酸微塑料与砷复合污染对蚯蚓的毒性效应
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闫艺萌(2004-),女,山东临沂人,本科生,主要从事土壤环境毒理学研究..

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闫艺萌 , 刘俊慧, 马琳燕, 冯晓雪, 李柏村, 李欣妍, 曹秀凤, 朱丽, 王志峰*
作者信息
  • 山东建筑大学市政与环境工程学院,山东 济南 250101
通讯作者:
* 责任作者,副教授,
作者简介:

闫艺萌(2004-),女,山东临沂人,本科生,主要从事土壤环境毒理学研究..

Toxicological effects of polylactic acid microplastics and arsenic co-contamination in earthworms
Yi-meng YAN , Jun-hui LIU, Lin-yan MA, Xiao-xue FENG, Bai-cun LI, Xin-yan LI, Xiu-feng CAO, Li ZHU, Zhi-feng WANG*
Affiliations
  • School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan 250101, China
出版时间: 2025-08-20
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将赤子爱胜蚓(Eisenia fetida)暴露于聚乳酸微塑料(PLA MPs, 0.5% w/w)与不同浓度亚砷酸盐(As(Ⅲ),40或100mg/kg)的单一及复合污染土壤中28d,分析蚯蚓体内6种生物标志物的响应特征和两种污染物的生物富集水平,以评估PLA MPs和As(Ⅲ)的联合毒性效应及相关机制.生物富集分析结果显示,复合暴露组的As(Ⅲ)生物富集量较单一As(Ⅲ)暴露组平均下降34.2%.生物标志物分析结果显示,随着暴露水平和时间的增加,蚯蚓体内出现显著的氧化应激响应.采用综合生物标志物响应指数(IBR)量化多种生化指标的综合毒性效应,在PLA MPs和As(Ⅲ)的单一及复合污染组中均显示出显著的剂量-效应关系,且发现复合暴露组的IBR指数值较单一As(Ⅲ)暴露组平均降低28.8%.联合毒性评价结果表明,两者在不同As浓度暴露下的联合毒性效应均为拮抗作用.本研究揭示了PLA MPs与As复合污染对蚯蚓的毒性效应及其潜在机制,为评估此类联合毒性的风险提供了科学依据.

蚯蚓  /  聚乳酸微塑料  /  砷  /  综合生物标志物响应指数(IBR)  /  联合毒性

In this study, the earthworm Eisenia fetida was exposed to soils contaminated with polylactic acid microplastics (PLA MPs, 0.5% w/w) and arsenite (As(Ⅲ), 40 or 100mg/kg) under single and co-exposure scenarios for 28 days. The responses of six selected biomarkers and the bioaccumulation levels of the two pollutants in earthworms were analyzed to evaluate the joint toxic effects and underlying mechanisms of PLA MPs and As(Ⅲ). Bioaccumulation results indicated that the bioaccumulation of As(Ⅲ) in co-exposure groups decreased by an average of 34.2% compared to the single As(Ⅲ) exposure groups. Biomarker analysis revealed significant oxidative stress responses in earthworms, which intensified with increasing exposure concentration and duration. The Integrated Biomarker Response index (IBR) was used to quantify the integrated toxic effects of multiple biomarkers, showing a significant dose-effect relationship in both single and co-exposure groups. Notably, the IBR values in co-exposure groups were reduced by an average of 28.8% compared to those in single As(Ⅲ) exposure groups. Joint toxicity evaluation indicated antagonistic interactions between PLA MPs and As(Ⅲ) at both arsenic exposure levels. These findings systematically elucidate the toxicological effects and potential mechanisms of PLA MPs and As co-contamination in earthworms, providing scientific evidence for ecological risk assessment of such combined toxicity.

earthworm  /  polylactic acid microplastics  /  arsenic  /  Integrated Biomarker Response index (IBR)  /  joint toxicity
闫艺萌, 刘俊慧, 马琳燕, 冯晓雪, 李柏村, 李欣妍, 曹秀凤, 朱丽, 王志峰. 聚乳酸微塑料与砷复合污染对蚯蚓的毒性效应. 中国环境科学, 2025 , 45 (8) : 4646 -4655 .
Yi-meng YAN, Jun-hui LIU, Lin-yan MA, Xiao-xue FENG, Bai-cun LI, Xin-yan LI, Xiu-feng CAO, Li ZHU, Zhi-feng WANG. Toxicological effects of polylactic acid microplastics and arsenic co-contamination in earthworms[J]. China Environmental Science, 2025 , 45 (8) : 4646 -4655 .
  • 山东省自然科学基金资助项目(ZR2023MD011)
  • 国家自然科学基金资助项目(41907351)
  • 山东省高等学校青创团队计划资助项目(2022KJ317)
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2025年第45卷第8期
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  • 接收时间:2025-01-13
  • 首发时间:2026-10-08
  • 出版时间:2025-08-20
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  • 收稿日期:2025-01-13
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山东省自然科学基金资助项目(ZR2023MD011)
国家自然科学基金资助项目(41907351)
山东省高等学校青创团队计划资助项目(2022KJ317)
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    山东建筑大学市政与环境工程学院,山东 济南 250101

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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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